HP Compaq dc7100 CMT User Manual

5-28 361834-001 Technical Reference Guide
Input/Output Interfaces
USB Control
The USB is controlled through I/O registers as listed in table 5-21.
5.7.3 USB Connector
These systems provide type-A USB ports as shown in Figure 5-10 below.
Figure 5-10. Universal Serial Bus Connector (Female)
Table 5-21.
USB Control Registers
I/O Address Register Default Value
00, 01h Command 0000h
02, 03h Status 0000h
04, 05h Interupt Enable 0000h
06, 07 Frame Number 0000h
08, 0B Frame List Base Address 0000h
0Ch Start of Frame Modify 40h
10, 11h Port 1 Status/Control 0080h
12, 13h Port 2 Status/Control 0080h
18h Test Data 00h
Table 5-22.
USB Connector Pinout
Pin Signal Description Pin Signal Description
1 Vcc +5 VDC 3 USB+ Data (plus)
2 USB- Data (minus) 4 GND Ground
1 2
3 4

HP Compaq dc7100 CMT Specifications

General

Memory	Up to 4 GB DDR2 SDRAM
Operating System	Windows XP Professional
Processor	Intel Pentium 4
Chipset	Intel 915G Express
Storage	40GB to 160GB SATA HDD
Graphics	Integrated Intel Graphics Media Accelerator 900
Optical Drive	DVD-ROM, CD-RW, DVD+/-RW
Network	Integrated Gigabit Ethernet
Form Factor	Convertible Minitower
Expansion Slots	1 PCI Express x16, 3 PCI
Ports	USB 2.0, serial, parallel, PS/2, audio in/out